Pipe joint



Spt. 3, 1935. w DAM$EL 2,013,267

' PIPE JOINT Filed April 4, 1934 Patented Sept. 3, 1935 UNITED STATES PATENT 'OFFICE PIPE JOINT William B. Damsel, New York, N. Y.

Application April 4, 1934, Serial No. 719,000

3 Claims. (01. 285-194) This invention relates to improvements in pipe Referring to Figs. 1 to 3 inclusive, 1 and 8 desjoints and more especially to novel means for ignate the adjacent ends of pipes forming part protecting and reinforcing the packing gaskets of a pipe line. In actual practice these ends are of such joints. spaced apart as indicated at 9 and the gap is In pipe joints of the type employing channelbridged by a channel-shaped packing ring l0 shaped packing rings formed of rubber or the consisting of a web II and lips l2; the ring being like, it is well known that when the pipe line is housed Within a conventional split metallic houssubjected to sub-atmospheric pressure, the web ing I3 provided with connecting bolts 14.

or peripheral portion of the packing ring caves The gaskets ID of such pipe joints are usually 10 inwardly and this results in distortion of the placed on pipe lines initially operated in pres- 10 ring and leakage of the joint. sure service. When so operated, the internal It is also known that when the packing rings pressure forces the web II against the housing. are made of rubber and the pipe line is convey- Subsequently when the line is placed on vacuum ing gasoline or the like, such a fluid will attack service, there is a tendency for the web H to be the rubber and this results in deterioration of sucked inwardly and this causes leakage. In acthe ring. Therefore, a primary object of the cordance with the invention,Iarrange within the present invention is to provide a reinforcing and channel of the gasket a reinforcing and protectprotecting ring which may be introduced into the ing ring [5 having sufficient rigidity to resist packing ring to prevent the latter from caving caving in of the web ll. Such ring may be made inwardly and to protect the web from deterioraof a strip of resilient metal having its edges 20 tion brought about by the passage of certain folded over, as shown at l6, for the purpose of fluids through the line. stiffening the ring and providing a groove H in Another object is to furnish a metallic reinwhich a tongue l8 at one end of the ring may forcing and protecting collar which may not only slide. The reinforcing and protecting ring may he slipped into a packing ring, but which may he slipped into the gasket before the latter is 25 expand and contract circumferentially coinciplaced on the pipe line and as the ring has a dent with the expansion and contraction of tendency to expand, it will hold the web taut t packing g. against the housing and eliminate to a consid- With the foregoing objects outlined and with erable extent the action of gasoline or the like other objects in view which will appear as the on the rubber forming the gasket. Obvious y 30 description proceeds, the invention consists in when the pipe line is subjected to vacuum, the rethe novel features hereinafter described in detail, inforcing ring will prevent Collap 0f the illustrated in the omp y n w and gasket and thus act to prevent leakage.

more particularly pointed out in the appended nstead of making the ring in such a way that claims. the tongue I8 is of less width than the ring, the 35 In t e d a folded over edges lBa of the ring may be left 1 is a longitudinal sectional View Of a p spaced from the inner surface of the ring so as 1 0 o p p llne a d i lust atin a joint prO- to form guide grooves Ila for a wider tongue lBa, Vld d W h 0116 form of y Improved reinforcing as shown in Figs. 4 and 5. In this modification,

- 40 and protecting ring, s d v w being ta n on the it is obvious that the tongue l8a will slide in the 40 edge grooves lla as the ring expands and con- Fig. 2 1s a transverse sectional view on the line tracts of While I have shown in Figsv 1, 2, and 4 appli- Fig. 3 is a perspective view of the overlapping end portions of the reinforcing and protecting cations of my lmproved reinforcing and protectg ing ring to a special packing gasket of a well 45 Fig. 4 is a fragmentary view similar to Fig. 1 ktiown type 1t 15 evident t may be emloyed and Showing a modifiedform of protecting and with channel-shaped packing rings of other types.

reinforcing ring For example, in Fig. 6 the ring l5a is shown em- Fig 5 is a view'like 3 but f the modified ployed with apacking gasket [0a having parallel 50 ring surfaces lob on the inner sides of its lips. Fig. 6 is a view similar to Fig. 4 but showing the From the foregoing it is believed'the protecting ring cooperating with a packing ring tion and advantages of t e i proved pip joint of a different form than that illustrated in Figs. may be r d ly nderstood and I am aware that 65' 1, 2, and. 4. 7 changes may be made in the details disclosed without departing from the spirit of the invention as expressed in the claims.

What I claim and desire to secure by Letters Patent is:

1. The combination with a channel-shaped packing gasket, of a split, imperforate reinforcing and protecting ring arranged in the gasket at the bottom of the channel and having sufficient rigidity to prevent the gasket from caving inwardly the ends of said ring overlapping to permit expansion and contraction of the ring, the edges of the ring being folded over on the body of the same throughout substantially the entire circumference of said ring for reinforcing purposes.

2. The combination with a channel-shaped packing gasket, of a reinforcing and protecting ring arranged in the gasket at the bottom of the channel and having suflicient rigidity to prevent the gasket from caving inwardly, the edge portions of the ring being folded over on to the body of the same throughout substantially the entire circumference of said ring for reinforcing and guiding purposes, the ring being of split construction and provided at one end with a projecting tongue of substantially the same width as the distance between the folded edge portions of the ring, said tongue engaging the edges of said portions and being guided thereby.

3. The combination with a channel-shaped packing gasket, of a reinforcing and protecting o ring arranged in the gasket at the bottom of the channel and having sufficient rigidity to prevent the gasket from caving inwardly, said ring being of split construction and having overlapping ends, said ring having its margins folded toward one another throughout substantially its entire circumference for reinforcing purposes and to provide opposite guide grooves, one end portion of the ring having a projecting tongue slidably guided by said grooves.

WILLIAM B. DAMSEL. 

